code: def init_filters():
      global PREDEFINED_FILTERS
  
      return {
          f.name: dict(value=f.default, active=f.active)
          if f.default is not None
          else dict(active=f.active)
          for f in PREDEFINED_FILTERS
      }
  
file_path: dtale/dtale/predefined_filters.py
imports: import inspect
  from six import PY3
label_desc: Use image node_id 4 for calling a global function with example usage: init_filters() and returns: unknown